How many down conductors are required for a building with a perimeter length of 325 feet?

For a building with a perimeter length of 325 feet, the requirement for down conductors is typically based on standards that suggest one down conductor for every 100 feet of perimeter. To determine the appropriate number, you would divide the total perimeter (325 feet) by the standard distance (100 feet).

When you perform this calculation, you get 3.25, which means that you need at least 4 down conductors to effectively manage lightning protection systems and ensure safety requirements are met. Since you cannot have a fraction of a down conductor, rounding up to the next whole number is necessary.

Therefore, having 4 down conductors is the correct answer, as it ensures compliance with safety regulations while providing adequate grounding and lightning protection for the building. This aligns with best practices in Electrical Explosives Safety, ensuring that potential hazards associated with electrical discharges are mitigated effectively.